🐛 fix(vscode): 移交终审修正：schema 墓碑、顶层兜底、前置复查、分支保护、清单校验

Claude-Session: https://claude.ai/code/session_011cEyL6k351U2BzX1Qmygph

vscode/src/panel/handlers/handoff.test.ts

@@ -87,7 +87,7 @@ describe('payloads', () => {
     })
   })
   it('移交 UI patch 用 null 清字段并更新 assignees', () => {
-    expect(handoffStartedUiPatch(9, 'chw', 'me')).toEqual({
+    expect(handoffStartedUiPatch(9, 'chw', 'me', { keepWorktreePath: false })).toEqual({
       handoffAttachmentId: '9',
       handoffFrom: 'chw',
       assignees: ['me'],
@@ -95,10 +95,32 @@ describe('payloads', () => {
       implementSessionId: null,
       reviewSessionId: null,
       testSessionId: null,
+      profilePath: null,
+      brainstormProfilePath: null,
+      testProfilePath: null,
+      prDiffFile: null,
       worktreePath: null,
       worktreeExists: false,
     })
   })
+  it('移交 UI patch：keepWorktreePath=true 时省略 worktreePath / worktreeExists', () => {
+    const patch = handoffStartedUiPatch(9, 'chw', 'me', { keepWorktreePath: true })
+    expect(patch).not.toHaveProperty('worktreePath')
+    expect(patch).not.toHaveProperty('worktreeExists')
+    expect(patch).toEqual({
+      handoffAttachmentId: '9',
+      handoffFrom: 'chw',
+      assignees: ['me'],
+      sessionId: null,
+      implementSessionId: null,
+      reviewSessionId: null,
+      testSessionId: null,
+      profilePath: null,
+      brainstormProfilePath: null,
+      testProfilePath: null,
+      prDiffFile: null,
+    })
+  })
   it('接管落盘：清两个共享字段，写本机 sid / profile / worktree', () => {
     expect(handoffAcceptedStateExtra({
       sessions: { implementSessionId: 'i', reviewSessionId: 'r' },